For best results, use as directed for 4 weeks. Brush regularly with colgate optic white toothpaste and colgate 360 optic white toothbrush and rinse with colgate optic white mouthwash for a whiter smile. Adults and children 2 years of age and older: brush teeth thoroughly for 2 minutes, preferably after each meal or at least twice a day, or as directed by a dentist or physician. Children 2 to 6 years: use only a pea sized amount and supervise child's brushing and rinsing (to minimize swallowing). Children under 2 years: ask a dentist or physician.